Patent attributes
A golf club head with at least one hollow rail disposed on the sole of the club head body, and an insert positioned within at least a portion of the at least one hollow rail. The insert may include a thermoplastic polymer, such as thermoplastic urethane, and may be positioned to beneficially modify a mass distribution of the club head. By providing sole rail(s), a player may benefit from improved ball speed due to the improved interaction between the club head and turf or ground. The golf club head may further include a channel along a length of the sole of the club head, wherein the channel traverses the at least one hollow rail. The channel may extend in a heel-toe direction along the sole and allow greater flexibility in the club head upon impact with a golf ball.